A stanza is a set of lines in a poetry. Each stanza in a poem’s division into stanzas is linked to the others by a rhythmic, frequently thematic pattern. There are frequently blank lines between stanzas.
Stanzas are frequently described by how many lines they have. Couplets, tercets, quatrains, quintains, and sestets are examples of stanzas that range in length from two to six lines. For instance, an Elizabethan sonnet might have three quatrains and a couplet.
Stanzas are similar to prose paragraphs in that they contain a set of related lines that express a single idea. They may also follow a predetermined rhyme scheme. In formal poetry, unless a stanza is designed to stand out in some manner, the rhythm and rhyme pattern of the opening stanza sets the pattern for the rest.